Vulnerability Description
D-Link DIR-645 1.03 A1 is vulnerable to Buffer Overflow. The hnap_main function in the cgibin handler uses sprintf to format the soapaction header onto the stack and has no limit on the size.
CVSS Score
9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Dlink | Dir-645 Firmware | 1.03 |
| Dlink | Dir-645 | a1 |
Related Weaknesses (CWE)
References
- https://github.com/luqiut/iot/blob/main/DIR-645%20Stack%20overflow.mdExploitThird Party Advisory
- https://www.dlink.com/en/security-bulletin/Vendor Advisory
- https://github.com/luqiut/iot/blob/main/DIR-645%20Stack%20overflow.mdExploitThird Party Advisory
- https://www.dlink.com/en/security-bulletin/Vendor Advisory
FAQ
What is CVE-2021-43722?
CVE-2021-43722 is a vulnerability with a CVSS score of 9.8 (CRITICAL). D-Link DIR-645 1.03 A1 is vulnerable to Buffer Overflow. The hnap_main function in the cgibin handler uses sprintf to format the soapaction header onto the stack and has no limit on the size.
How severe is CVE-2021-43722?
CVE-2021-43722 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2021-43722?
Check the references section above for vendor advisories and patch information. Affected products include: Dlink Dir-645 Firmware, Dlink Dir-645.